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Implements the 'Surfer' robot, which continually follows a "squared reversed C" shape path,
clockwise and counterclockwise around the right half of the battlefield. Stops and scans for
other robots at top center, top right corner, bottom right corner, and bottom center positions.
Shoots 1-3 bullets at a time when a robot is scanned based on proximity. Adjusts fire power based
on distance to the enemy. Conserves Robot energy by not continuously firing.
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